open MTK CLIENT TOOL 5.2 FREE
select Vivo tab
select safe format
turn off the phone
hit start
hol vol- and vol+ and insert usb cable
wait until done
https%3A//i.imgur.com/TmdU7Il.png[/img]']https%3A//i.imgur.com/r7kQrWV.jpg[/img]']
for frp
select Erase frp(All mtk)
https%3A//i.imgur.com/r9ca4ha.png[/img]']https%3A//i.imgur.com/QoZApe7.jpg[/img]']